➀ Researchers have identified a lithium-titanium-phosphate material with negative thermal expansion properties as a potential solution to the problem of reduced performance of lithium-ion batteries in cold environments. ➁ The material's unique crystal structure allows for efficient lithium-ion storage and transport at low temperatures, maintaining high capacity and discharge rates. ➂ This discovery could lead to improved battery performance in cold conditions, benefiting applications such as electric vehicles and aerospace.